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GOODWILL AND INTANGIBLE ASSETS
12 Months Ended
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL AND INTANGIBLE ASSETS
GOODWILL AND INTANGIBLE ASSETS
Amortized Intangible Assets
The components of amortized intangible assets at December 31, 2016 and December 26, 2015 were as follows:
 
December 31, 2016
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Weighted
Average
Life
Customer Relationships
$
191,316

 
$
111,342

 
13 years
Proprietary Software & Database
3,616

 
3,056

 
8 years
Patents & Proprietary Technology
6,434

 
3,420

 
11 years
Other
3,713

 
3,668

 
3 years
 
$
205,079

 
$
121,486

 
 
 
December 26, 2015
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Weighted
Average
Life
Customer Relationships
$
201,801

 
$
101,614

 
13 years
Proprietary Software & Database
3,571

 
2,966

 
8 years
Patents & Proprietary Technology
6,815

 
3,421

 
11 years
Other
3,752

 
3,671

 
3 years
 
$
215,939

 
$
111,672

 
 

Amortization expense for intangible assets was $15,935, $18,339 and $18,414 for the fiscal years ended December 31, 2016, December 26, 2015 and December 27, 2014, respectively.
Estimated annual amortization expense related to finite‑lived intangible assets is as follows:
 
Estimated
Amortization
Expense
2017
$
15,063

2018
13,434

2019
12,694

2020
11,634

2021
9,586


The useful lives assigned to finite‑lived intangible assets included consideration of factors such as the Company’s past and expected experience related to customer retention rates, the remaining legal or contractual life of the underlying arrangement that resulted in the recognition of the intangible asset and the Company’s expected use of the intangible asset.
Non-amortized intangible assets
Intangible assets with indefinite lives are not amortized. The carrying values of trade names at December 31, 2016 and December 26, 2015 were as follows:
(7) GOODWILL AND INTANGIBLE ASSETS (Continued)
 
December 31,
2016
 
December 26,
2015
 
Year Acquired
Webforge
$
8,624

 
$
10,430

 
2010
Valmont SM
8,765

 
8,919

 
2014
Newmark
11,111

 
11,111

 
2004
Ingal EPS/Ingal Civil Products
7,032

 
8,504

 
2010
Donhad
5,305

 
6,415

 
2010
Shakespeare
4,000

 
4,000

 
2014
Industrial Galvanizers
2,201

 
2,662

 
2010
Other
13,747

 
13,889

 
 
 
$
60,785

 
$
65,930

 
 

In its determination of these intangible assets as indefinite‑lived, the Company considered such factors as its expected future use of the intangible asset, legal, regulatory, technological and competitive factors that may impact the useful life or value of the intangible asset and the expected costs to maintain the value of the intangible asset. The Company expects that these intangible assets will maintain their value indefinitely. Accordingly, these assets are not amortized.
The Company's trade names were tested for impairment separately from goodwill in the third quarter of 2016. The values of the trade names were determined using the relief-from-royalty method. The Company determined that the value of its trade names were not impaired. The decrease in certain trade names in 2016 was solely due to currency translation effects.
In 2015, the Company recorded a $5,830 impairment of the Webforge trade name (in Energy and Mining segment) and a $1,100 impairment of the Industrial Galvanizing trade name (in Coatings segment).
Goodwill
The carrying amount of goodwill by segment as of December 31, 2016 and December 26, 2015 was as follows:
 
Engineered
Support Structures
Segment
 
Energy and Mining Segment
 
Utility
Support
Structures
Segment
 
Coatings
Segment
 
Irrigation
Segment
 
Total
Gross Balance at December 26, 2015
$
101,275

 
$
99,829

 
$
75,404

 
$
75,941

 
$
19,359

 
$
371,808

Accumulated impairment losses

 
(18,670
)
 

 
(16,222
)
 

 
(34,892
)
Balance at December 26, 2015
101,275

 
81,159

 
75,404

 
59,719

 
19,359

 
336,916

Foreign currency translation
(6,961
)
 
(8,947
)
 

 
(150
)
 
252

 
(15,806
)
Balance at December 31, 2016
$
94,314

 
$
72,212

 
$
75,404

 
$
59,569

 
$
19,611

 
$
321,110






(7) GOODWILL AND INTANGIBLE ASSETS (Continued)
 
Engineered
Support Structures Segment
 
Energy and Mining Segment
 
Utility
Support
Structures
Segment
 
Coatings
Segment
 
Irrigation
Segment
 
Total
Balance at December 27, 2014
$
107,868

 
$
106,770

 
$
75,404

 
$
75,533

 
$
19,536

 
$
385,111

Impairment

 
(18,670
)
 

 
(16,222
)
 

 
(34,892
)
Acquisition

 

 

 
3,019

 

 
3,019

Foreign currency translation
(4,856
)
 
(6,941
)
 

 
(2,611
)
 
(177
)
 
(14,585
)
Divestiture of business
(1,737
)
 

 

 

 

 
(1,737
)
Balance at December 26, 2015
$
101,275

 
$
81,159

 
$
75,404

 
$
59,719

 
$
19,359

 
$
336,916


During the second quarter of 2015, the Company divested of a small business in its ESS segment. The goodwill allocated to that business was $1,737 and was required to be written off based on the selling price of the divested business.
The Company’s annual impairment test of goodwill was performed during the third quarter of 2016 and it was determined that the goodwill on the consolidated balance sheet was not impaired.
In fiscal 2015, the Company recognized a $16,222 impairment charge which represented all of the goodwill on the APAC Coatings reporting unit. The forecast for lower prices for oil and natural gas required an interim step 2 test for our Access Systems reporting unit during the fourth quarter of 2015. Accordingly, the Company recorded a $18,670 impairment of Access System's goodwill.